74 
straight, free, and rather stouter than the rest. The ter- 
tiaries are thin, spined, and wavy at their free edges, and 
are joined by the higher orders, which have also irregular, 
spined edges, about midway from the wall. Тһе interior of 
the calice, with its slender, cellular, and wavy septa, may be 
compared to an extremely fine lace pattern. The tertiaries 
in each system bend towards each other, and meet or not 
near the columella. Іп one half-system the fourth cycle af 
septa is wanting, and its tertiary remains straight and free 
almost to the columella, when it curves round and unites 
with the other tertiary in the same system. The columella 
is small, fascicular, and consists of a few twisted, rod-like 
processes, which are longitudinally placed at the bottom of 
the fossa. Superficially it is free, but deeper down it is 
joined by the principal septa. 
The height of the corallum is 15 mm., the cylindrical por- 
tion being 9 mm., and the terminal stem 6 mm. in length. 
The calice is 8 mm. long and 7 mm. broad. 
Locality, etc.—Very rare at Cape Otway and at Wilkin- 
son's No. 4, adjoining beds in the Aire River district. One 
example from each locality. 
This elegant little coral may be at once distinguished from 
its congeners in the same beds by its delicate, finely granular 
wall. Its nearest ally is B. campanulata, Duncan, which is 
also restricted to the beds mentioned. The latter, however, 
has a large, spongy columella, more prominent coste, and 
much stouter septa. 
Balanophyllia Basedowi, spec. nov. Pl. xxv., figs. 7a, b. 
The corallum is very low, cylindrical, and attached by а 
broad, spreading base to shells or polyzoa. There is a dis- 
tinct, perpendicular, stout, but very short wall. This is 
porous, and marked by broad, raised, granular coste. Some 
epitheca exists; in the type it is confined to the outer por- 
tion of the spreading base. 
The calice is circular, almost flat, and has a wide, porous 
margin. The septa are also porous, but not granular. They 
are in six systems with three cycles. The tertiaries curve 
round and join the secondaries about halfway from the mar- 
gin, and these again unite with the primaries at the colu- 
mella. The fourth order, when present, joins the primaries 
quite close to the wall. The columella 1s small, and con- 
sists of a few fascicular processes, which unite with the pri- 
mary and secondary septa. 
Height, 2 mm.; diameter of calice, 4:5 mm. 
Locality, etc.—Eocene. The three examples of this coral 
are from widely separated localities. Two of them, viz., the 
type, from the Murray River, near Morgan, and another 
